modify Dockerfile

Signed-off-by: zjgemi <liuxin_zijian@163.com>

Author: zjgemi

Dockerfile

@@ -1,3 +1,7 @@
 FROM python:3.8
 
-RUN pip install dpdispatcher
+WORKDIR /data/dpdispatcher
+ADD requirements.txt ./
+RUN pip install -r requirements.txt
+COPY ./ ./
+RUN pip install .